The Schnittke Festival kicked off on Sunday at the Royal College of Music with electric and bass guitars as part of the unwieldy ensemble. Lodged in the Royal Festival Hall last night, Vladimir Jurowski’s programming continued in the second concert with similar flair, but this time two 18th-century horns and two cors anglais were the odd ones out. We were back in 1764 and the early days of the symphony viewed through the prism of Joseph Haydn – every inch as much of an original as Wagner and Schnittke, who were to join him later, and just as able to bend the past to his own ends.